Resistors
General Purpose Precision
Surface Mount Resistors
GPCF Series
Precision metal film technology
Ohmic range 10R – 100K
Precision to ±0.1% and 25ppm/°C
Load life stability and humidity to 0.5%
All parts are Pb-free and comply with EU Directive 2011/65/EU (RoHS2)
Electrical Data
0402
Power rating @70°C
Limiting element voltage
Resistance range
Resistance tolerance
TCR (20 to 70°C)
Values
Insulation resistance (100V, 60s)
Voltage proof (60s)
Ambient temperature range
ohms
volts
°C
300
-55 to 155
watts
volts
ohms
%
ppm/°C
0.063
50
0603
0.1
75
10R – 100K
0.1, 1
25, 50
E24 & E96 preferred. Other values may be available by request.
1G min
500
0805
0.125
0.25
150
1206
Physical Data
Dimensions (mm) & weight (mg)
L
0402
0603
0805
1206
1.0 ± 0.1
1.6 ± 0.1
2.0 ± 0.15
3.1 ± 0.15
W
0.5 ± 0.05
0.8 ± 0.15
1.25 ± 0.15
1.55 ± 0.15
T max
0.45
0.55
0.65
0.70
A
0.25 ± 0.1
0.3 ± 0.2
0.4 ± 0.2
0.45 ± 0.2
C
0.2 ± 0.1
0.3 ± 0.2
0.4 ± 0.2
0.5 ± 0.3
Wt nom
0.65
2.05
4.25
8.06
Construction
A thin-film material is selectively deposited on a 96% alumina substrate together with metallic contacts at each end of the resistor. The
unadjusted resistors are heat treated to give the required TCR and stability, then a precisely controlled laser trim process adjusts the
resistance value. Epoxy protection is applied and wrap-around terminations are added and plated with nickel then tin. Each resistor is
measured immediately before packing into tape.
Terminations
Solderability
The chips are supplied with 100% Sn matte plated wrap-around terminations suitable for soldering.
The terminations have an electroplated nickel barrier and tin coating. This ensures excellent ‘leach’ resistance properties and
solderability.
Marking
The 0402 chips are not marked. 3 digit marking is used on the 0603 size and 4 digit marking on larger sizes and E96 values.
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
BI Technologies IRC Welwyn
http://www.ttelectronics.com/resistors
© TT Electronics plc
04.17
General Purpose Precision
Surface Mount Resistors
GPCF Series
Performance Data
Test
Load life
Humidity
Short term overload
High temperature operation
Temperature cycle
Resistance to solder heat
Solderability
Conditions
1000 hours rated load @ 70°C
240 hours @ 40°C, 90%RH
Lesser of 2.5 x rated power & 2 x LEV, for 5s
96 hours at 155°C
5 cycles -55°C to 155°C
270°C for 10s
245°C for 2s
ΔR%
ΔR%
ΔR%
ΔR%
ΔR%
ΔR%
Maximum (+0.05R)
0.5
0.5
0.5
0.5
0.5
0.25
95% minimum coverage
Packaging
GPCF Resistors are supplied paper taped and reeled as per IEC 286-3.
Application Notes
GPCF resistors are ideally suited for handling by automatic methods due to their rectangular shape and the small dimensional
tolerances. Electrical connection to a ceramic substrate or to a printed circuit board can be made by reflow or wave soldering of wrap-
around terminations.
Wrap-around terminations provide good leach properties and ensure reliable contact. Due to the robust construction, the GPCF can be
immersed in the solder bath for 30 seconds at 260°C. This enables the resistor to be mounted on one side of a printed circuit board and
wire-leaded components applied on the other side.
GPCF resistors themselves can operate at a maximum temperature of 155°C. For soldered resistors, the joint temperature should not
exceed 110°C. This condition is met when the stated power levels at 70°C are used.
Ordering Procedure
GPCF0603-1K54BT5 (0603, 1.54 kilohms, ±0.1%, ±25ppm/°C, Pb-free)
3
3
TCR
Blank = ±25ppm/°C
02 = ±50ppm/°C
F = ±1%
4
4
5
5
6
6
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
BI Technologies IRC Welwyn
http://www.ttelectronics.com/resistors
© TT Electronics plc
04.17
PCB Design
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